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Finding the Fourth Proportional to 18,590.82, 27,890.34 and 8,730.24

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Solution

The fourth proportional to 18,590.82, 27,890.34 and 8,730.24 is: 13,097.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,590.82 : 27,890.34 = 8,730.24 : x
  2. Step 2: Convert to fraction form
    18,590.82/27,890.34 = 8,730.24/x
  3. Step 3: Cross multiply
    18,590.82x = 27,890.34 × 8,730.24
  4. Step 4: Simplify right side
    18,590.82x = 243,489,361.88
  5. Step 5: Solve for x
    x = 243,489,361.88/18,590.82
  6. Step 6: Final answer
    x = 13,097.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.